Thanks for the feedback. If you look at table 2 at the end of the article, it doesn't show who worked out when, but it shows some of the data. If you notice, on the 8th set, it says that 100% of the test subjects were "responders," which I assume means they performed better with the citrulline than without it. I find that really hard to believe, especially if half of the subjects that took citrulline on the first workout instead of a week later. Who knows though. By the way, sorry for putting this in the wrong section, it obviously belongs in the supplements section.